While the total emissivity of a perfect black body is unity, the same for a real body is
A)0
B)1
C) 1
D)Between 0 and 1

Name: While the total emissivity of a perfect black body is unity, the same for a real body is A)0 B)1 C)> 1 D)Between 0 and 1
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Question

While the total emissivity of a perfect black body is unity, the same for a real body is
A)0
B)1
C)> 1
D)Between 0 and 1

Quizplus · Accepted Answer

The total emissivity of a real body is always less than 1 and greater than 0, reflecting that real bodies are not perfect emitters of radiation compared to a perfect black body, whose emissivity is 1.

While the Total Emissivity of a Perfect Black Body Is